1. Tds meter comfortable use: water tester for drinking water, press the switch and immerse the test pen in the water to be tested. The lower the Tds value, the lower the content of dissolved solids in the water and the purer the water. It is an ideal accessory for drinking water, swimming pools, aquariums, spas or laboratories. 2. High precision, high quality, automatic calibration: Tds meter for drinking water conductivity: 0 9990us/cm, Tds: 0 9990ppm, Celsius: 0.1 80.0°C, Fahrenheit: 32.0 176.0°F, accuracy: ±2%. Equipped with automatic temperature compensation (ATC) to ensure accurate readings at different temperatures. 3. Drinking water tester 3in1 design: the water quality tester consists of a Tds meter, an EC meter and a temperature meter. Tds meters can know the water quality, with high accuracy and faster speed, and can be used to test drinking water, hydroponic or felt aquarium water. 4. LCD display, mode conversion: Tds meter kit is convenient to use. Simply immerse the Tds. EC tester for a few seconds in the solution, and it will simultaneously display water Tds / conductivity Ec and temperature values to quickly and accurately detect the water quality. And the instrument has a practical LCD screen to provide a clear field of view. The green backlight ensures that you can read measurement results in all conditions even at night, making it easy to adapt to a wide range of environments. Press the 'Shift' button to switch between Tds/EC mode, Celsius/Fahrenheit mode.